Projector Christie Roadster X4 User Manual

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Generally, set at 50 (default) to apply no
keystone—if your projector is positioned
with its lens surface parallel to the
screen, images will be rectangular. If
images are too narrow at the bottom,
increase keystone. If images are too
narrow at the top, reduce keystone.
The keystone control may be limited
when Size is just slightly greater than
1000. In general, work with image size,
stretch and keystone controls as necessary for your application.
Plug &...

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Brightness
(
SHORT CUT: Press Bright and adjust the slidebar.)
“Brightness” increases or decreases the amount of black in the image (0-100). Start
high and decrease so that dark areas do not become black (i.e., are “crushed”).
Conversely, high brightness changes black to dark gray, causing washed-out images.
For best results, keep close to 50.
Pixel Phase
(SHORT CUT: Press Pixel and adjust the slidebar.)
See description in Size and Position section, above....

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Color Setup
Select this submenu to work with
aspects of color—adjust for
saturation and overall hue in video
signals, or adjust gamma or
temperature in any signal.
COLOR — “Color” adjusts the
color saturation level or the
amount of color in a video image. When set to “0’ the image appears black and
white, and when set too high the colors appear overpowering and unrealistic. Use
 and  to adjust “Color” until the desired saturation level is displayed. For a...

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DEFAULT (default) –  This setting provides good black levels and high contrast
under optimum viewing conditions for virtually all types of images, including
video, HDTV and computer graphics.
ENHANCED – This setting elevates middle gray levels compared to “Default”, and
provides a more gradual rolled-off transition to maximum white. Together, these
differences can improve the appearance of many kinds of images.
HIGH AMBIENT – This setting elevates low gray...

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SELECT COLOR TEMP – See Figure 3.17. Upon opening the Color Temperature
Setup menu, the current temperature appears as the top option. You can change to
a different color temperature here as desired, just as in the Image Settings menu.
Note that selecting a “User” color temperature, enables the “White Level”
options in the Color Temperature Setup—you can adjust them as desired to
define or change a “User” color temperature (see “White Levels”, below).
Likewise,...

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To create a starting point: To set a starting point for a new custom user color
temperature, select a user temperature, then highlight “Copy From” and select a
temperature that is similar to what you want. Adjust white levels from there as
desired.
To use a factory default: The preset color temperature setups (3200K, 5400K,
6500K and 9300K) can be altered from within the password-protected Service
menu only—note that although such an
alteration changes the setup...

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• 0 IRE – For DVD output with “enhanced black”, SECAM, most PAL
standards, and Japanese NTSC.
• 
7.5 IRE – For most NTSC video signals.
For some types of video, you can override the setting. The control is disabled for other
types of video (and all graphics sources). Generally, if black appears crushed when
brightness = 50, choose “0 IRE”. If black appears excessively elevated, use “7.5 IRE”.
VCR – This control determines to what degree the projector tolerates...

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Good RGB or input
levels—that is, the
drives and blacklevels
for each of the three
colors, red, green and
blue—ensure that
images from analog
sources other than
decoded video have
maximum contrast
without crushing black
or white. By default
(and in an “Auto Setup”
from the Main menu), the projector automatically determines the best input levels by
monitoring image content and adjusting the controls appropriately—further
adjustment is typically not required to...

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only a certain color while adjusting—use the “Color Enable” option
(described below).
6. Delete the “Auto” checkmark and leave the Input Levels menu.
IMPORTANT: Do not use Input Levels to adjust color temperature. This will
distort Contrast and Brightness functions as well as color temperature.
CLAMP TIP – This option (full name sync tip clamping) can brighten the image
produced from certain high resolution, high frequency graphic sources. Enter a
checkmark if...

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for this source are correctly set. Upon exiting the Input Levels menu, the Peak
Detector checkbox will clear.
Figure 3.21. Adjusting Input Levels Using the Peak Detector
(RED EXAMPLE SHOWN)
Processing Mode
This control determines the
projector’s processing route for
the incoming signal.
1. 
AUTO (default):  The
projector will
automatically select
the correct processing mode according to what input signal it detects.
Use “Auto” unless you want or need to override...